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TL497ACNSLE Datasheet(PDF) 3 Page - Texas Instruments

Part No. TL497ACNSLE
Description  500-mA PEAK STEP-UP STEP-DOWN,INVERTING SWITCHING VOLTAGE REGULATOR
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

TL497ACNSLE Datasheet(HTML) 3 Page - Texas Instruments

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TL497A
500mA PEAK STEPUP, STEPDOWN, INVERTING SWITCHING VOLTAGE REGULATOR
SLVS009F − JUNE 1976 − REVISED FEBRUARY 2005
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1)
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI(COMP INPUT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI(INHIBIT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode reverse voltage
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power switch current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode forward current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Notes 2 and 3): D package
86
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
101
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
113
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
−65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. All voltage values, except diode voltages, are with respect to network ground terminal.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN
MAX
UNIT
Supply voltage, VCC
4.5
12
V
High-level input voltage, VIH
INHIBIT pin
2.5
V
Low-level input voltage, VIL
INHIBIT pin
0.8
V
Step-up configuration (see Figure 1)
VI + 2
30
Output voltage
Step-down configuration (see Figure 2)
Vref
VI − 1
V
Output voltage
Inverting regulator (see Figure 3)
−Vref
−25
V
Power switch current
500
mA
Diode forward current
500
mA
Operating free-air temperature range, TA
TL497AC
0
70
°C
Operating free-air temperature range, TA
TL497AI
−40
85
°C


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